Advantages of RAC
High Availability: Oracle RAC helps protect database against a node failure, OS failure. If one or few of the nodes in the cluster fails, Oracle Database can still be accessed through the remaining functioning nodes. Thus, greatly increasing the availability of the Database.
Scalability: If the Oracle Database needs to support more number of users and loads, then additional nodes can be added to Oracle Clusterware. With the additional node addition, Database can now support more users without any downtime of migrating to a new bigger hardware. Thus, greatly increasing the scalability.
Load Balancing/Failover: Oracle RAC is an active/active model cluster. Incoming client connections can be load balanced among the available nodes. Thus each node in the cluster shares the workload. In case of a node failure, the connections can be redirected(failed over) to one of the available nodes transparently.
High Availability: Oracle RAC helps protect database against a node failure, OS failure. If one or few of the nodes in the cluster fails, Oracle Database can still be accessed through the remaining functioning nodes. Thus, greatly increasing the availability of the Database.
Scalability: If the Oracle Database needs to support more number of users and loads, then additional nodes can be added to Oracle Clusterware. With the additional node addition, Database can now support more users without any downtime of migrating to a new bigger hardware. Thus, greatly increasing the scalability.
Load Balancing/Failover: Oracle RAC is an active/active model cluster. Incoming client connections can be load balanced among the available nodes. Thus each node in the cluster shares the workload. In case of a node failure, the connections can be redirected(failed over) to one of the available nodes transparently.
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